package com.heima.article.service.impl;

import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.article.mapper.ApArticleConfigMapper;
import com.heima.article.mapper.ApArticleContentMapper;
import com.heima.article.mapper.ApArticleMapper;
import com.heima.article.service.ApArticleService;
import com.heima.common.constants.ArticleConstants;
import com.heima.model.article.dtos.ArticleDto;
import com.heima.model.article.dtos.ArticleHomeDto;
import com.heima.model.article.pojos.ApArticle;
import com.heima.model.article.pojos.ApArticleConfig;
import com.heima.model.article.pojos.ApArticleContent;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.Date;
import java.util.List;

@Service
@Slf4j
@Transactional
public class ApArticleServiceImpl extends ServiceImpl<ApArticleMapper, ApArticle> implements ApArticleService {

    @Autowired
    private ApArticleMapper apArticleMapper;

    //单页最大加载的数字
    private final static short MAX_PAGE_SIZE = 50;

    /**
     * 根据参数加载文章列表
     *
     * @param dto
     * @param type 1为加载更多  2为加载最新
     * @return
     */
    @Override
    public ResponseResult load(ArticleHomeDto dto, Byte type) {

        //校验参数
        Integer size = dto.getSize();
        if (size == null || size == 0){
            size = 10;
        }
        size = Math.min(size, MAX_PAGE_SIZE);
        dto.setSize(size);
        //文章频道校验
        if (StringUtils.isEmpty(dto.getTag())){
            dto.setTag(ArticleConstants.DEFAULT_TAG);
        }
        //时间校验
        if (dto.getMaxBehotTime() == null){
            dto.setMaxBehotTime(new Date());
        }
        if (dto.getMinBehotTime() == null){
            dto.setMinBehotTime(new Date());
        }
        //查询数据
        List<ApArticle> apArticles = apArticleMapper.loadArticleList(dto, type);
        //封装
        return ResponseResult.okResult(apArticles);
    }

    @Autowired
    private ApArticleContentMapper apArticleContentMapper;

    @Autowired
    private ApArticleConfigMapper apArticleConfigMapper;

    /**
     * 保存app端相关文章
     *
     * @param dto
     * @return
     */
    @Override
    public ResponseResult saveArticle(ArticleDto dto) {
        //1.检查参数
        if (dto == null){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }
        ApArticle apArticle = new ApArticle();
        BeanUtils.copyProperties(dto, apArticle);

        //2.判断是否存在id
        if (dto.getId() == null){
            save(apArticle);

            ApArticleConfig apArticleConfig = new ApArticleConfig(apArticle.getId());
            apArticleConfigMapper.insert(apArticleConfig);
        }else {
            updateById(apArticle);

            ApArticleContent apArticleContent = apArticleContentMapper.selectOne(Wrappers
                    .<ApArticleContent>lambdaQuery().eq(ApArticleContent::getArticleId, dto.getId()));
            apArticleContent.setContent(dto.getContent());
            apArticleContentMapper.updateById(apArticleContent);
        }

        //结果返回
        return ResponseResult.okResult(apArticle.getId());
    }
}
